Modeling the Phase Behavior of Essential Oils in Supercritical CO2 for the Design of a Countercurrent Separation Column

2014 ◽  
Vol 53 (32) ◽  
pp. 12830-12838 ◽  
Author(s):  
Cristina Gutiérrez ◽  
Juan Francisco Rodríguez ◽  
Ignacio Gracia ◽  
Antonio de Lucas ◽  
M. Teresa García
Keyword(s):  
Essential Oils ◽  
Phase Behavior ◽  
Supercritical Co2 ◽  
Separation Column

Effect of cosolvent on the phase behavior of non-fluorous Ls-54 surfactant in supercritical CO2

2003 ◽  
Vol 211 (2) ◽  
pp. 265-271 ◽  
Author(s):  
Juncheng Liu ◽  
Buxing Han ◽  
Jianling Zhang ◽  
Tiancheng Mu ◽  
Ganzuo Li ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Supercritical Co2

Experimental determination and modeling of the phase behavior for the selective oxidation of benzyl alcohol in supercritical CO2

2011 ◽  
Vol 302 (1-2) ◽  
pp. 83-92 ◽  
Author(s):  
Ioannis Tsivintzelis ◽  
Matthias Josef Beier ◽  
Jan-Dierk Grunwaldt ◽  
Alfons Baiker ◽  
Georgios M. Kontogeorgis
Keyword(s):  
Phase Behavior ◽  
Experimental Determination ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Supercritical Co2 ◽  
Oxidation Of Benzyl Alcohol

Extraction, separation and isolation of essential oils from natural matrices by supercritical CO2

2003 ◽  
Vol 18 (6) ◽  
pp. 505-509 ◽  
Author(s):  
Bruno Marongiu ◽  
Alessandra Piras ◽  
Federica Pani ◽  
Silvia Porcedda ◽  
Mauro Ballero
Keyword(s):  
Essential Oils ◽  
Supercritical Co2 ◽  
Extraction Separation

Supercritical CO2 extraction of essential oils from orange peel

1996 ◽  
Vol 9 (4) ◽  
pp. 238-243 ◽  
Author(s):  
B. Mira ◽  
M. Blasco ◽  
S. Subirats ◽  
A. Berna
Keyword(s):  
Essential Oils ◽  
Supercritical Co2 ◽  
Orange Peel ◽  
Supercritical Co2 Extraction

Recent Advances in Supercritical CO2 Fracturing: New Theory, New Technology, and Application

2021 ◽  
Author(s):  
Wenguang Duan ◽  
Baojiang Sun ◽  
Deng Pan ◽  
Jianchun Xu ◽  
Jian Liu
Keyword(s):  
Temperature Gradient ◽  
Phase Behavior ◽  
Supercritical Co2 ◽  
Phase Control ◽  
Control Model ◽  
Injection Rate ◽  
Shale Oil ◽  
Fracturing Fluid ◽  
Fluid Filtration ◽  
Injection Temperature

Abstract The shale oil reservoir in Jimusaer has the characteristics of low porosity and low permeability, resulting in significant resistance in oil flow compared with conventional oil reservoirs. Fracturing is needed to increase shale oil production. Supercritical CO2 (SC-CO2) is an ideal choice for fracturing fluid due to its unique physical and chemical properties. SC-CO2 fracturing is able to make CO2 flow into microfractures and greatly reduce the pumping pressure. New progress has been made in the application of the supercritical CO2 fracturing technology in Jimusaer. A phase control model of SC-CO2 fracturing as a function of temperature and pressure is established, which takes into account the SC-CO2 features, intrinsic energy, flow behavior in fracture and fluid filtration. In this paper, the influences of injection pressure and temperature, injection rate, temperature-pressure field, temperature gradient, and phase behavior are analyzed extensively, in addition, the phase control model and its chart of fracture are presented. The proppant accumulation height reduces by a small amount with the increase of the fracturing fluid injection rate. It is necessary to improve the proppant pumping technology by the sand embankment section and proppant concentration. The liquid transforms into supercritical fluid, when flowing in wellbores and fractures. Different fractures have different phase points, and a lower injection temperature is affected by higher injection rate, lower temperature gradient and closer position from transformation point to the end of fracture. Therefore, in order to achieve a better fracturing effect, the injection temperature, pressure, and rate need to be optimized by surface equipment according to the reservoir conditions, to control the phase behavior of CO2. We built a phase control model for the SC-CO2 fracturing technology, which considers temperature control. We also developed some new techniques to improve SC-CO2 fracturing which is critically needed in the Jimusaer oilfield.

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